METHOD FOR DETERMINING THE COORDINATES OF DEFECTS DURING ACOUSTIC EMISSION CONTROL Russian patent published in 2022 - IPC G01N29/14 

FIELD: quality control.

SUBSTANCE: invention relates to non-destructive testing of metal structures by acoustic emission method and can be used to determine the coordinates of defects in extended and large-sized objects of the railway, aviation, space, oil and gas industries with limited access to them. The essence lies in the fact that at least three acoustic emission transducers are installed on the controlled product, at a distance between the centers of the transducers in a group not exceeding the minimum acoustic wave length, the product is loaded, acoustic emission signals generated by the defect of the product are received, the phase difference between the signals registered by the transducers is determined in the group for each signal which determines the angle characterizing the direction of wave propagation, while determining the distance to the defect by the time of the rise of the leading edge of the wave, and the coordinates of the defect are determined by certain mathematical expressions.

EFFECT: determination of the coordinates of the AE source using a minimum number of receiving transducers with limited access to the object of control while maintaining the accuracy of the location of defects.

1 cl, 3 dwg, 2 tbl